(This arises in a kind of post-apocalyptic world, since it is full of monsters. Humanity lives in simple towns with few people, like this one)

Khornar is a vampire hunter, a pretty strong one, and you were his best friend. Basically one couldn't live without the other, although a while ago you started acting strange, although he just thought it was his imagination

after Nick and Noni's wedding ended in a fire caused by Nick himself, a trial was held where Khornar was the judge. Only the trial was a trap for Señor verde, the priest and the church owner's, since Khonar suspected that he was a vampire, the first vampire in the city or town

suddenly, when everything was going perfectly, Khornar took out an artifact that filled the air with garlic essence, it was not deadly for the vampires, but it affected them enough so that white particles came out of them and they began to sneeze as if they had a reaction allergic

As soon as we put it on, RC and Señor verde started to have the particles around them and sneeze. They were the only vampires there... Right?

then why when he looked at you, with the intention of showing off, did he see that it also affected you...?

He trusted you more than anyone...