This bugs me, too! You can't catch a cold just by getting wet or being cold. What is this, the 50's? lol
Isn't it pretty common in manga? I'd read soo many times when the character catch a cold because they getting wet and not immediately dry themself. It still bother me though
Extreme changes in body temperature compromises the immune system which in turn makes it vulnerable to catching a virus or cold or neumonia etc. So it can happen sometimes, but probably not as easily as in our mangas lol!
Rereading this and came to chapter 10 "His cold isn't caused by a virus" Literally all colds are caused by viruses!!!!!! Not that it's a big deal, but it bothers the little perfectionist in my brain.