Is it normal to literally "smell" bad situations?

I don´t know how to explain this clearly, and i'm not sure if i can.
But here is the deal: whenever something is out of my beliefs, my habits or when i feel afraid, i kind of smell something (for like a milisec or two) i have never smelt before, and it slightly freaks me out.
The most common example is when someone deeply and seriously talks {or i see something about} the Holy Death (I'm from Mexico, i don't know about other countries but here is rare to find people whose beliefs are not christian or catholic. I've been raised as a catholic but i'm not such a religious person) or the devil, or witches, or that kind of stuff.
But the thing is, i'm not really afraid of those things. I just feel a kind of bad vibes, even though i don't describe myself as an spiritual person lol.
Ok but another example (more recent) is that these days that i've been talking about my graduation and all that stuff. Which means a big change of my life. Well it doesn't really matters, like i know i'll get through it BUT I JUST WANT TO KNOW IF SOMEONE ELSE GOES THROUGH THAT SMELLING STUFF. :)
(while writing that last paragraph i felt that again lol (:(:(:)