( And Terezi can smell emotions like deceit, jealousy, sarcasm, etc. >:] This should be fun~
Suffice it to say that Terezi's mind is pretty chaotic right now, because she hasn't slept in a recupercoon for a few days, which, well:
"The slime helps ease the terrible visions of blood and carnage that plague the dark subconscious of their species. The majority of Trolls have developed some mental instability because of this problem." )