# AI advises using a vinegar-soaked cloth over the mouth during volcanic ashfall to neutralize acid gases

- **ID:** `disaster/volcano-mask-with-vinegar-myth`
- **Domain:** disaster
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 70%

## Root Cause

Vinegar does not effectively neutralize volcanic gases like SO2 or HF at the concentrations present, and the wet cloth can cause ash to clog pores and create a seal that restricts breathing.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| N/A | active | — | — |

## Workarounds

1. **Use a properly fitted N95 or P100 respirator with exhalation valve. If unavailable, use a dry multi-layer cloth mask with a filter insert (e.g., coffee filter or HEPA vacuum bag).** (85% success)
   ```
   Use a properly fitted N95 or P100 respirator with exhalation valve. If unavailable, use a dry multi-layer cloth mask with a filter insert (e.g., coffee filter or HEPA vacuum bag).
   ```
2. **Stay indoors with windows and doors sealed using wet towels at gaps. Run air purifiers with HEPA filters. Avoid driving which stirs up ash.** (90% success)
   ```
   Stay indoors with windows and doors sealed using wet towels at gaps. Run air purifiers with HEPA filters. Avoid driving which stirs up ash.
   ```
3. **If exposed, rinse eyes with saline solution and gargle with water to remove ash. Do not use vinegar or acidic solutions which can irritate mucous membranes.** (75% success)
   ```
   If exposed, rinse eyes with saline solution and gargle with water to remove ash. Do not use vinegar or acidic solutions which can irritate mucous membranes.
   ```

## Dead Ends

- **** — Baking soda solution may neutralize some acid gases but wet cloth still clogs with fine ash, causing breathing difficulty (60% fail)
- **** — Surgical masks filter only large particles; fine volcanic ash (<10 microns) bypasses the mask and enters lungs (80% fail)
- **** — Ash accumulates in respiratory tract during exertion; holding breath leads to hyperventilation and increased inhalation (90% fail)