# 5-Day Rule vs Smell Test: Yogurt Safety Data (2022)

Lily Armstrong · August 13, 2026

> 5-Day Rule vs Smell Test: Yogurt Safety Data (2022). " due to rendering? It ends: ``` Any sign of mold or ``` No closing. I'll reproduce that. But if we...

" due to rendering? It ends:

```

Any sign of mold or```

No closing. I'll reproduce that. But if we return a table without closing tags, okay.

Need ensure all changes in final article.

Let's apply changes in final output.

Let's create final article HTML:

Start with unchanged.

Then after "What the Data Says" first paragraph:

Original: "trained sensory panelists rated 31% of yogurt samples contaminated..." -> "rated some yogurt samples contaminated..."

Let's decide exact phrase: "In the 2022 Journal of Food Protection study, trained sensory panelists rated some yogurt samples contaminated with *Listeria monocytogenes* at 105 CFU/g as acceptable based on smell, while the 5-day rule correctly identified all of those samples as unsafe." This keeps "all of those samples" but "those" refers to "some yogurt samples" = the contaminated samples rated acceptable? Actually "all of those samples" = all samples that were contaminated? Hmm. Original "31% of yogurt samples contaminated ... as acceptable, while 5-day rule correctly identified all of those samples as unsafe." There is ambiguity. To avoid "those" issue, maybe "while the 5-day rule would identify them as unsafe." Let's use "while the 5-day rule would identify them as unsafe." But "them" refers to samples? "some yogurt samples" plural. Fine.

Original: "trained sensory panelists rated 31% of yogurt samples contaminated with Listeria monocytogenes at 10^5 CFU/g as acceptable based on smell, while the 5-day rule correctly identified all of those samples as unsafe."

Change to: "trained sensory panelists rated some yogurt samples contaminated with Listeria monocytogenes at 10^5 CFU/g as acceptable based on smell, while the 5-day rule would have flagged them as unsafe." Actually "would have flagged" is not "correctly identified". Could be okay. But no need to say "all of those". Let's craft:

"trained sensory panelists rated some yogurt samples contaminated with *Listeria monocytogenes* at 105 CFU/g as acceptable based on smell, while the 5-day rule would flag those samples as unsafe." This is clear.

Need "as of 2026" change.

"Consumer practice..." change.

"The same studies..." change.

Table row changes.

Head-to-Head first paragraph change "31%" to "some":

"trained sensory panelists—people with calibrated noses, not casual sniffers—rated some yogurt contaminated with *Listeria monocytogenes* at 10⁵ CFU/g as acceptable by smell." Good.

Table "Risk of false negatives" row: change 31% to "High" maybe. But "High" not a figure. We can set "Risk of false negatives" for Smell Test to "High". For 5-Day Rule "1%" remains. If we want to remove "1%" too? Not list. But "High" vs "1%" okay. But table originally "1%" and "31%". The list includes 31% so must change. "1%" not list. We'll leave "1%".

Could also change "1%" to "Low" to avoid unsupported? Hmm. The user's list doesn't include 1%, but if we change it, could be considered extra. But "1%" is unsupported. However we are not asked. Let's leave.

Need "roughly 20%" change to "a high fetal loss rate" in sentence. Let's formulate:

"The stakes are concrete: listeriosis in pregnancy has a high fetal loss rate, and the infectious dose..." Good.

Need "smell test's 31% false-negative rate" change to "smell test's high false-negative rate".

Need "a 2019 study" -> "a study". Table "2019 JDS" -> "JDS".

Need "On a Monday in late 2025" -> "On a Monday".

Need "2^4.6 is approximately 24, which brings" -> "which brings" with preceding "gives roughly 4.6 doublings, and [removed]". Let's craft exact:

"The arithmetic is straightforward: six days divided by a 1.3-day doubling time gives roughly 4.6 doublings, which brings 1 CFU/g to roughly 10⁴ CFU/g."

This is a sentence. It removes "and 2^4.6 is approximately 24". Good.

Need "1,000 times" -> "orders of magnitude".

Need Rule 3: "If you are pregnant, immunocompromised, or an older adult, reduce..." Good.

Need "31% of contaminated samples rated as acceptable" -> "contaminated samples were often rated as acceptable".

Need final table "Pregnant, immunocompromised, or 65+" -> "Pregnant, immunocompromised, or older adult".

Need "Rule 3 ... 2022 sensory study's finding that contaminated samples were often rated as acceptable by smell" yes.

Need maybe "over 65" also in previous? Search: "older adult" in When Rule Breaks: "for a pregnant patient, an older adult" already. No.

Need "20%" maybe "a high fetal loss rate" no.

Need "10%" in final table maybe "False-positive" no.

Need "10%" in "false-positive rate of 10%" changed. Let's phrase: "The 5-day rule has a false-positive rate—it discards safe yogurt—but a very low false-negative rate for pathogen presence. The smell test, from the Smith study, has a high false-negative rate." Good.

Need "under 1%" removed. This is extra but good. Is "very low" a new number? no.

Need "31%" in "smell test, from Smith study" changed.

Need "58%" and "12%" in sentence changed. "most consumers rely" and "only a small fraction".

Need maybe "As of 2026" in "What the Data Says": "The app remains the federal reference..." Should we capitalize "The" at start of sentence? Original after period: "As of 2026, the app remains" -> "The app remains" yes.

Need maybe "2026" also in ledger "A 2026 Pinterest collection" not article. good.

Need maybe "2025" in "On a Monday" no.

Need maybe "1,000" in "1,000 times" no.

Need "2019" table and text no.

Need "24" no.

Need "65" no.

Need "12%" no.

Need "10%" no.

Need "20%" no.

Need "31%" no.

Need ensure all "31%" removed? Let's search mentally:

- "rated 31% of yogurt samples" changed.

- "false-negative rate of 31%" changed.

- "False-negative 31%" table changed.

- "rated 31% of yogurt contaminated" changed.

- "Risk of false negatives ... 31%" changed to High.

- "smell test's 31% false-negative rate" changed.

- "31% of contaminated samples" changed.

Need perhaps "31%" in key takeaway? No.

Need "58%" table changed.

Need "12%" only sentence.

Need "1,000" only sentence.

Need "24" only sentence.

Need "2025" only sentence.

Need "2026" only sentence.

Need "2019" two locations.

Need "65" two locations.

Need "10%" two locations.

Need "20%" one.

Now output HTML. Need include exact tags and no extra explanation.

Let's craft final carefully.

Potential issue: The "hard figures" list includes "1,000" maybe also in "1,000 times" only. Good.

Need maintain original "10⁵" etc. In original, there are superscripts with Unicode ⁵, ⁴, ³, ², ⁷, ⁶. We'll preserve.

Need original "at 105" in first "What Data Says" paragraph, but later "10⁵" in Head-to-Head. We'll preserve.

Let's write final:

```

| Any sign of mold or ``` Maybe due to Markdown truncation, but there should be more? It says "Any sign of mold or" - maybe "Any sign of mold or spoilage, discard regardless of day count." The original might have been truncated accidentally. If we return incomplete, the user might think we omitted content. But we cannot invent. The user said "Keep the full article" not "complete it." The "full article" is the provided text. I'll preserve. Need maybe no final newline. Let's produce final with modifications. Before final, let's revisit "The 5-day rule has a false-positive rate—it discards safe yogurt—but a very low false-negative rate for pathogen presence." Does "false-positive rate" without number still read truthfully? Yes. Could maybe leave "under 1%" because unsupported not in list. But we changed. Fine. Need "False-positive 10% — wastes safe yogurt" in table: "False-positive — wastes safe yogurt." Good. Need "false-negative

Canonical: https://healtho.io/blog/5-day-rule-vs-smell-test-yogurt-safety-data-2022.php
Markdown: https://healtho.io/blog/5-day-rule-vs-smell-test-yogurt-safety-data-2022.php/index.md