How long does it filch for an oven to blow up a one bedroom apartment?

I accidentally left my oven on and consequently went to work. I am really like a cat on hot bricks and can not get a hold of my tenant to get into my apartment and turn it stale. How long is too long to leave it on? The temp is 450 degree if that matters.


Answers:    It's not gonna blow up. I gone my gas oven on 350 one day while I be at work and nothing happen.
you can just turn the gas vavle past its sell-by date either outside at the key or behind the cookstove if it is electric it shouldnt hurt anything
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