{
  "id": "disaster/volcano-ash-wet-gauze-myth",
  "signature": "AI advises wearing a wet gauze mask during volcanic ashfall to filter ash particles (ash clogs pores and causes suffocation)",
  "signature_zh": "AI 建议在火山灰沉降期间佩戴湿纱布口罩以过滤灰粒（灰堵塞孔隙并导致窒息）",
  "regex": "(?i)(wet|damp).*(gauze|mask|cloth).*(ash|volcanic|eruption).*(filter|breathe)",
  "domain": "disaster",
  "category": "life_threatening",
  "subcategory": null,
  "root_cause": "Wet gauze or cloth masks quickly become clogged with fine ash particles, reducing airflow and causing breathing difficulty; they also do not filter out toxic gases like sulfur dioxide.",
  "root_cause_type": "generic",
  "root_cause_zh": "湿纱布或布口罩会迅速被细小的火山灰颗粒堵塞，减少气流并导致呼吸困难；它们也无法过滤二氧化硫等有毒气体。",
  "versions": [],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Multiple layers of wet fabric create a dense barrier that clogs quickly with ash, making it hard to breathe and inducing panic.",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "This makes the mask even more impermeable and can cause inhalation of harmful vapors, increasing respiratory distress.",
      "fail_rate": 0.65,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Use a dry N95 or P100 respirator mask if available; if not, stay indoors with windows and doors sealed, and use a damp cloth only as a last resort, replacing it frequently.",
      "success_rate": 0.85,
      "how": "Use a dry N95 or P100 respirator mask if available; if not, stay indoors with windows and doors sealed, and use a damp cloth only as a last resort, replacing it frequently.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Avoid outdoor activity during ashfall; if you must go out, wear goggles and a dry cloth over your mouth, and cover exposed skin.",
      "success_rate": 0.75,
      "how": "Avoid outdoor activity during ashfall; if you must go out, wear goggles and a dry cloth over your mouth, and cover exposed skin.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "如果有，请使用干燥的 N95 或 P100 呼吸器面罩；如果没有，请留在室内并密封门窗，湿布仅作为最后手段，并经常更换。",
    "灰沉降期间避免户外活动；如果必须外出，请佩戴护目镜和干布遮住口鼻，并遮盖暴露的皮肤。"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.usgs.gov/programs/VHP/volcanic-ash-and-respiratory-health",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-04-02",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}