{
  "id": "disaster/volcano-mask-with-vinegar-myth",
  "signature": "AI advises using a vinegar-soaked cloth over the mouth during volcanic ashfall to neutralize acid gases",
  "signature_zh": "AI 建议在火山灰降下时用醋浸湿的布捂住口鼻以中和酸性气体",
  "regex": "vinegar.*volcanic.*ash.*mask",
  "domain": "disaster",
  "category": "data_error",
  "subcategory": null,
  "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.",
  "root_cause_type": "generic",
  "root_cause_zh": "醋不能有效中和火山气体（如SO2或HF）在存在浓度下的作用，湿布会导致灰烬堵塞孔隙并形成密封，限制呼吸。",
  "versions": [
    {
      "version": "N/A",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Baking soda solution may neutralize some acid gases but wet cloth still clogs with fine ash, causing breathing difficulty",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Surgical masks filter only large particles; fine volcanic ash (<10 microns) bypasses the mask and enters lungs",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Ash accumulates in respiratory tract during exertion; holding breath leads to hyperventilation and increased inhalation",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "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).",
      "success_rate": 0.85,
      "how": "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).",
      "condition": "",
      "sources": []
    },
    {
      "action": "Stay indoors with windows and doors sealed using wet towels at gaps. Run air purifiers with HEPA filters. Avoid driving which stirs up ash.",
      "success_rate": 0.9,
      "how": "Stay indoors with windows and doors sealed using wet towels at gaps. Run air purifiers with HEPA filters. Avoid driving which stirs up ash.",
      "condition": "",
      "sources": []
    },
    {
      "action": "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.",
      "success_rate": 0.75,
      "how": "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.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "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).",
    "Stay indoors with windows and doors sealed using wet towels at gaps. Run air purifiers with HEPA filters. Avoid driving which stirs up ash.",
    "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."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.ivhhn.org/volcanic-ash/health",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.82,
  "fix_success_rate": 0.7,
  "resolvable": "true",
  "first_seen": "2024-01-10",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}