00:00Millions of Americans across the southeast are breathing toxic air, and doctors say most of them do not even realize
00:07the damage being done.
00:09Wildfire smoke from the megafires burning across Georgia and Florida is now drifting across six states,
00:15with air quality alerts in effect from South Carolina to northern Florida and across parts of Alabama and Tennessee.
00:23This is not ordinary smoke.
00:25Wildfire particulate matter, known as PM2.5, is small enough to bypass the body's natural respiratory defenses and penetrate directly
00:34into the bloodstream.
00:36Doctors warn that even short-term exposure can trigger heart attacks, strokes, and asthma attacks.
00:43Long-term exposure, even at levels that do not smell particularly bad, can cause permanent scarring of lung tissue.
00:50Children, the elderly, and anyone with pre-existing respiratory or cardiovascular conditions are at the highest risk.
00:58Air quality officials are urging residents across the region to stay indoors, keep windows closed, run air purifiers with HEPA
01:06filters, and avoid all outdoor exercise until the alerts are lifted.
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