Yes, it neutralizes all digestive odours. Your armpits will smell cleaner in about 4 weeks. Fecal odour is the strongest and takes the longest time to neutralize. It is indoles that causes that putrid odour and Champex/Odor Cleanse/Pro M remove this compound.
You can eat garlic/curry/whatever and won't smell the next day. You can notice the smell going away towards the end of the evening after eating these foods, and it's gone by morning. It supposedly removes tobacco odour from smokers too. I used to smell of beef stew for 48hrs after eating it, now it's no problem.