Arm & Hammer Odor Eliminator For Carpet & Room Extra Strength Boxed 30 Oz

I have asthma and am very sensitive to smells- including some scented laundry soaps- does this have a strong odor?

has anyone used this with a Dyson vacuum? wondering if it clogs a dyson. Thanks!

Directions say leave on carpet for either 15 or 30 mins. Is there any damage to the carpet if left on longer like all day before vacuuming?

Has anyone used this to remove old cigarette smoke odor?