They all have fumes but not bad. I spray it on. Have to be prepped of course. You just want to actually stop rust fluid film actually penetrates it, but have to re spray it every other year. Use it on the vehicles here.
My husband uses fluid film on his truck. He hasn’t had any issues yet. He sprays it on every year. I’m just not a fan of the smell…I tell him his truck smells like feet after it’s done :lol: It fades after a bit.