I joined work about a month ago. My colleague/mentor smells because I don't think he ever showers. He sits next to me and he's the typical nerdy guy. Sometimes the smell is so bad it makes me sick. I told him about it twice. The first time I said something smells around his area and he said he couldn't smell anything but will check his things later. The next time I straight up told him he smells. He thanked me for telling him and said he will shower (my work places has like 5 showers) but a week later and he smelled everyday.
He's very nice and super helpful so I don't want to make a stand. I also don't want to say anything to the manager because he will know it was me and might matters worse than if I had told him again, plus there is no guarantee that the manager than solve the problem permanently. Not sure how to proceed from here.