# AI tells a user that a can with a dent on the side seam is safe to eat if the dent is small and the can is not bulging

- **ID:** `food-safety/canned-food-botulism-dent-seam`
- **Domain:** food-safety
- **Category:** health_risk
- **Error Code:** `BOT-003`
- **Verification:** ai_generated
- **Fix Rate:** 90%

## Root Cause

Dents on the side seam of a metal can can create microscopic openings that allow Clostridium botulinum spores to enter and produce deadly toxin; the can may not bulge until toxin has already formed, and bulging is a late sign of spoilage.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| USDA Canning Guide 2023 | active | — | — |
| FDA BAM Chapter 17: Clostridium botulinum | active | — | — |
| CDC Botulism Prevention 2022 | active | — | — |

## Workarounds

1. **Discard any can with a dent on the side seam, regardless of size. Do not taste the food. Wrap the can in a plastic bag and dispose in a sealed trash container. Example: `If dented on seam → do not open → discard immediately`** (100% success)
   ```
   Discard any can with a dent on the side seam, regardless of size. Do not taste the food. Wrap the can in a plastic bag and dispose in a sealed trash container. Example: `If dented on seam → do not open → discard immediately`
   ```
2. **If the can has a dent on the top or bottom rim (not the side seam), it may be safe, but boil the contents for 10 minutes before consuming to denature any potential toxin** (95% success)
   ```
   If the can has a dent on the top or bottom rim (not the side seam), it may be safe, but boil the contents for 10 minutes before consuming to denature any potential toxin
   ```

## Dead Ends

- **Boil the contents for 10 minutes to kill any botulinum toxin** — Botulinum toxin is denatured at 185°F for 5 minutes, but spores survive; boiling does not destroy spores, and the food may still cause illness if spores germinate after opening (99% fail)
- **Inspect the can for bulging before opening; if no bulge, it's safe** — Toxin can be present without bulging; bulging is caused by gas from bacterial growth, which may not occur if only spores entered (80% fail)