Advice on making smellier farts

Any advice for making someone gassier and also making them smell stronger?

Partner eats very healthy and tries to eat a lot of fiber on the regular (so her body is accustomed to it). Sometimes, we have had days where she eats a bunch of beans, onions, garlic, eggs for breakfast then a whey protein shake with a few scoops of inulin, then sugar free gummies.

It often results in a few decently large farts with just a bit of smell. I’m curious if anyone has any ideas for turning someone who has a clean diet and farts smell light and airy and giving them some pretty gross smelling farts from time to time.