Eliminate bad smells in the apartment without using chemicals
Since I react very sensitively to various fragrances, I have been using a simple stainless steel soap for years to neutralize odors in the home.
Almost everyone knows them, so you remove stubborn odors on the hands, for example. cut onions.
Likewise, the soap can remove odors from the apartment. You just put the soap in a bowl with water. The water is changed daily. This method is very cheap, effective and environmentally conscious.
Of course that does not replace the regular airing!