Yes,air fresheners are unhealthy to breathe in. Especially unhealthy are candles and those plug in air fresheners since they keep on releasing chemicals in the air. They are known carcinogens.
most sprays say to use in a well ventialted area. that in itself tells me not to use them. ever try oven cleaner or fantastic in a small room? choking!!
use mr clean or pine sol if you want the bathroom to smell fresh. dont spray air freshener after using the bathroom. just drop some pine sol in the toilet bowl and it will get rid of the odor you are trying to hide.
we have a gel that sits on the counter and you can open the top to let out a great smelling aroma to get rid of a bad odor.( try something like watermelon or something fruity in the summer it is very good smelling.)