This winter, we have been sleeping with the window cracked open. However, my daughter (who just turned 4 in January) often asks me "what's making that gas smell?" at night. I did not smell anything.
At first, I was a little worried that it might be some kind of gas leak. We live in an apartment building, but don't have any gas appliances. Then I thought it must be something coming in from outside. I don't really know how my daughter knows what gas smells like, since we haven't owned a car for over 18 months (so we haven't been to any gas stations lately), unless she recognizes it from the cars on the road.
In any case, this has gone on all winter. Last night she asked me again, "what's making that gas smell". Then, she said "maybe it's the blanket", she sniffed it and said, "yup, it's the blanket".
When we moved here, somehow our blankets must have wound up in long-term storage and so we bought some inexpensive but warm polyester fleece blankets for the winter.
Isn't polyester made of oil or something? In any case, I regret now that I've been poisoning our air in the bedroom with the fumes from this synthetic blanket. I'm thinking of getting rid of everything we own that is made of polyester fleece.