Fabreeze is a no no in a house with Fish tanks. It is notorius for going airborne and cusing fish to do the Motionless backfloat. I do not allow it to cross the threshold No way No how.
Depending on quantities Towel it dry like you would any other spill. Germs are not an issue beyond any normal consideration because most of the critters in our tanks will die when dry as mentioned.
If it is a large quantity, Rent a Carpet shapooing machine from the local Megalo Mart and use it to suck the carpet dry, and clean-up. Baking soda will work wonders on the odors if there are any when you are done. Just sprinkle the Baking soda on the area let it set overnight and then vaccum it up. Repeat as needed.
Dave