It won’t be a big deal if a cat just smells mosquito coils for one night. Although the smell of mosquito coils can cause certain harm to cats, sniffing it in small amounts for a short period of time will not cause serious harm to the cat’s body. Owners don’t have to worry, as long as they pay attention Then avoid lighting mosquito coils in your cat’s room. If there are many mosquitoes in the room, you can first put the cat in another room and then light the mosquito coil.