Pain is a common side effect of hygiene products that do serious cleaning (of one sort or another) if you've neglected what they are supposed to do.
For example, get some antiseptic mouthwash after you haven't used any for a while (which is admittedly probably fairly unusual to begin with, but still). Especially if your one of those guys who has routine minor gum inflammation for your teeh being close together and having trouble with even the "ultra fine" floss (like me). That crap will BURN when you first use it. Granted it won't do so again if you keep using it, but miss a week or so due to travelling or something and ... heh.
Deodorant doesn't usually hit me like that, but I'd imagine if your've neglected it for a while, the kind that cleans your pores would not be pleasant. If you use deodorant every day (like your supposed to) I'd imagine it wouldn't be an issue though (probably why I've never had that problem, with the mouth wash I've had years long battles with teeth spacing and very minor gum problems. Never had a cavity though).