Why does my room smell so bad? I don't understand it. It smells like a mix of ancient, sweaty gym shoes, rotten onions, and burnt rubber. I'm serious. It's an AWFUL smell. There is NOTHING under my bed or in the closet. My room is immaculately clean. (because its also the guest room and I move out when theres a guest) And even if I left yesterday's shirt draped over a chair, it shouldn't smell THAT bad. I bathe regularly, use deodorant, and perfume, and I KNOW it isn't me. I try burning candles and spraying air fresheners, but they just mask the smell, and once they fade it's there again. It smells so bad when I wake up in the morning I can hardly take it. And I can't open a window because it's winter.
What could this smell be?