Which is more harmful to health, electric fan or air conditioner?

It should be air conditioning, but it's not the air conditioning itself, but the way we use it. First of all, it may be difficult for us to have the habit of cleaning the air conditioner at home. You can open it in the coil on the indoor side. There must be a lot of mold in it. In fact, these bacteria and fungi are harmful to our health. When the air blows out and passes through the coil, these microorganisms will be brought out, causing discomfort to people.