can eating lots of protein cause a bad breath?

actually i`ve been eating basically nothing but rice protein. like my diet`s base was a protein. and some other fruits and veggies. but last 2 days i ate only proteins and some cantaloupes+ walnuts.

Bad breath is usually caused by indigestion.
That is, a bad combination of food you put in your gut.
Or eating something that does not digest very well in itself, such as highly processed foods.
Sugar will also do this as it can and usually does, cause fermentation in one’s gut (the bad kind of fermentation).

If you ate your fruits and veggies and rice together, that would definitely cause indigestion. As rule, fruit is to be eaten alone, with nothing else. I don’t know what rice protein is, but why not just eat rice? instead of rice protein.

How would you tell someone they have bad breath?

My grandma wants to kiss me every time she sees me which is like twice a year. Not like a french kiss or anything, just a normal kiss. The problem is, she has HORRIBLE breath. Almost to the point of making me want to vomit.

Kiss her on her forehead !