What is more likely to produce odor issues? a colostomy or an ileostomy?

Either, but...: The odor from either has its uniqueness reflecting what foods are consumed and how often the stomal care is given, and how long the bag is changed to discard the collected urine or stool, and of course, personal odor. So, there would be no definite answer to this Q. To decide which one is needed, a comprehensive counseling is required. So, see and talk with doc, and seek counseling so to decide.

Colostomy : The colostomy mostly produce more odor because of the nature of the bacteria in colon The ileostomy product are mostly liquid,less or no odor but very irritating to the skin because the are acidification If they leak they burn the skin bad Colostomy product are like the stool more firm and more smell