He's altering his death style. The filters are good for awhile and then they get full of carbon particulates and dust and spores that cling to the carbon particles and eventually clog the filter resulting in the air system choking and wheezing until it can no longer flow enough air. Then the system breaks down due to low air exchange, it overheats with minimal exertion, fills with fluid, and eventually shuts down permanently. You can change the filter but that only prolongs the inevitable because the damage has been done to the system as well as the filter. The only way to fix it is to take it outdoors and let clean air circulate through it for about 6 months, that will clean it out but you have to keep the smoke out of it forever.
Geez, this is too much fun.
Geez, this is too much fun.