# AI advises using a wet cloth over the mouth during volcanic ashfall (ash clogs pores and causes suffocation)

- **ID:** `disaster/volcanic-ash-wet-cloth-myth`
- **Domain:** disaster
- **Category:** life_threatening
- **Verification:** ai_generated
- **Fix Rate:** 78%

## Root Cause

A wet cloth quickly becomes clogged with fine ash particles, creating an impermeable barrier that makes breathing difficult and can lead to suffocation. Dry, particulate-filtering masks (N95 or P100) are effective.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| USGS Volcanic Ashfall Guidelines 2023 | active | — | — |
| WHO Health Advisory on Volcanic Ash 2022 | active | — | — |

## Workarounds

1. **Wear a properly fitted N95 or P100 respirator mask. If unavailable, stay indoors with windows and doors sealed, and use a HEPA air purifier. Do not use air conditioning that draws outside air.** (90% success)
   ```
   Wear a properly fitted N95 or P100 respirator mask. If unavailable, stay indoors with windows and doors sealed, and use a HEPA air purifier. Do not use air conditioning that draws outside air.
   ```
2. **If caught outside without a mask, create a dry, multi-layer cloth covering (e.g., a scarf or shirt) over the mouth and nose, but replace it frequently as it clogs. Seek indoor shelter immediately.** (40% success)
   ```
   If caught outside without a mask, create a dry, multi-layer cloth covering (e.g., a scarf or shirt) over the mouth and nose, but replace it frequently as it clogs. Seek indoor shelter immediately.
   ```

## Dead Ends

- **** — Assuming that dampening a cloth improves filtration; it actually reduces porosity and increases breathing resistance. (75% fail)
- **** — Believing that any cloth is better than nothing; a dry, loosely woven cloth also allows fine ash to pass through. (50% fail)