Can someone help me with smoke alarm placement?

I live in a very small, 5 room house. I have tried several smoke detectors over the years, and there seems to be no place I can put one that doesn't go off whenever I take a shower or cook. They are supposed to be placed a certain number of feet from heat sources such as kitchens or bathrooms, but there is no place in my house that is that far away. My kitchen is at one end of the house, and my bathroom a little past the middle. Even having the oven over a certain temperature (and yes, it is clean) makes it go off. I also have trouble with carbon monoxide detectors. Every time someone takes a shower, the gas alarm goes off. A family member wears a hearing aid, and the sound of the alarm is excruciating and makes the hearing aid buzz loudly. I presently do not have either installed because I can't spend my entire day turning them off. Does anyone have any suggestions?