Many KUDDO'S to you for taking him in
The mouth sprays help a "tad" as long as there isn't infection involved, can't cover that smell up. Hopefully with no infection it will get better for you. I also used a solution (not sure of name) i got online, you add 1/2 capful to their water daily, it's supposed to help with fresh breath....I'll search for it and get back and post it for you, unless someone post before hand....GOD BLESS PEOPLE LIKE YOU