Is the smell of cat urine bad for pregnant women to breathe?

The strong odor of cat urine can be unpleasant for anyone, but there is no evidence to suggest that it is specifically harmful to pregnant women. Urine, in general, contains ammonia and other chemicals that can have an irritating odor, but these chemicals are not typically present in high enough concentrations to cause any health problems. However, if you are concerned about the smell of cat urine, it is best to avoid contact with it as much as possible. You should also keep your cat's litter box clean and well-ventilated to minimize the odor.