Compressed air used for SCUBA should smell like regular air. There may be a slight rubber smell from the regulator. When in doubt, it is safer to get your tank refilled than to dive on contaminated air.
An air conditioner should not smell like smoke when turned on (or when turned off). I would have to suspect that the electrical insulation is burning.
like normal air
Lemon smells like a air freshner
Warm && Fappable (: && It Smells A Little " Spermy "
I'm almost positive they make air fresheners that smell like roses. And if they don't, then they should. If you want to buy some air fresheners (I'm not saying they smell like roses)
yes it really does!
Failed compressor
Most air fresheners give off a small to make your place smell great. They want you to enjoy the smell to get rid of any bad scents the you dont like. But if you dont like when air fresheners give off smells get the ones with no scent. if there is one.
A smell coming from a reverse cycle air conditioner may be a signal that the filter needs to be cleaned. A smell like engine exhaust might be present if the air conditioner motor is in need of repair.
Dogs bark at thin air for they smell something that they really like. It could bacon, sausage's, anything that has a strong sent of smell.
cause you ate popcorn! If the smell bothers you, get air fresheners.