I have a sensitive nose. Ever since becoming a mom, it's like I'm always sniffing. Smell is an indicator that a diaper needs to be changed (peeew), food is suspicious or hands have not been fully washed. To neutralize the odor in a safe way, I use white vinegar.
Recently, after a bout of stomach virus in the house, I scrubbed the carpets with vinegar. After drying, there was no more smell. It works to strip cloth diapers, too. I always add some to my husband's socks in the laundry, too. It's natural, safe and odor free!