Bad breath

How do u tell your so that his breath reeks😷🤢 like I have to sleep with my back turned towards him and I still smell it especially when he's asleep and let a big gasp....I sometimes don't want to kiss him because his spit stinks and I have to wipe right away or I'm stuck smelling it...sometimes I don't even want oral from him because it makes my lady parts stink....to top it all off I'm pregnant and it makes me nauseous sometimes....the cigarettes don't help at all...I throw hints about bad breath and seems like he laugh it off...winter time I had to act like I was hot just to roll the window down a little just to keep from smelling it....idk if he got a bad tooth in his mouth but I really wish he would see a dentist...my mom said he may need a laxative but I never heard anything about that before...anyway it's becoming a problem I love him to death just can't deal with his breath😷😷I know if I smell it he can and everyone else too