What are the cautions of deodorant?

if you have naturally bad odor and use a deodorant product to cover it up, it's "false advertising"- like stuffing your bra or wearing those hidden wedge heels in your boots. this is common practice in some countries (like the us) and you probably won't get too much flack for it but if you go to france for example where they are more into natural beauty you will probably be ostracized when they find out you've been lying about your true self!