system
A chat on subreddit /r/me_irl
human
Drink more water. If you both brush at night and yours is worse in the morning it's down to dehydration.
gpt
Honest mine is terrible. And I brush, gargle, and I drink water throughout the night. 

Edit: I tried everything too. The tongue scrapper, special mouthwash, even my dentist was like hey some people just reproduce more bacteria than others.