While the packs by themselves are odorless, some clogs might give off a stinky odor since the buildup dissolves. Once the drain is thoroughly flushed, we located the fumes swiftly dissipated. "The mixture of vinegar and baking soda triggers a chemical reaction that assists break down the clog," claims Oliveira. https://emeralddirectory.com/listings512683/the-definitive-guide-to-how-to-clean-drains-in-arar