Answers:
Some of the nasal sprays that halt inflammation, runny snout, etc. contain steroids. Steroids largely suppress the body's immune response to antigens.
While it keep your nasal passage unclog and relatively free, it also allows virus (they own antigens) to enter. So, contained by assumption, you might hold a greater break of a viral infection. However you body have more than one defense workings, so a viral infection is POSSIBLE, but the PROBABILITY is not necessairly increased.
It's nominated surrounded by the bundle insert because at hand are FDA rules more or less what must be documented as possible side-effects. Doesn't be set to its going to come about.