Body language vs Pheromones
More humans are weird: we are super into body language as a species. Like, we’re so into body language that we created cute pictograms to insert into our otherwise non-pictographic language specifically to add facial expressions to text communication. Which in and of its self is super cool. Most species have some form of this, like mating dances etc, but most of them also have pheromones to go with it. We do to, but we aren’t very good at sensing them or at least picking up that we’re sensing them. We rely on visual cues as our primary form of none-oral communication. So what if aliens are more pheromonal? Their body language is secondary to their chemical communication, so for instance they have a harder time flirting with someone across the room because they can’t smell/taste them. An alien and a human watch one of their friends at the bar interacting and the human say “we aren’t getting our drinks for a while, looks like Claire found herself a catch” and the alien is confused because how can you tell if she’s interested from across the room. You can see it on her face of course. Or! We describe some pheromonal cues visually, like when we describe pregnant women as glowing.
Human ‘Preeya looks amazing right now’
Alien ‘She seems rather tired right now actually’
Human 'Well, yeah, carrying a baby is hard, but she’s got that pregnant glow’
Alien (concerned) 'Do humans produce bioluminescence when they are pregnant? That was not in the books! She does not appear any brighter’
Human 'What no not literally, it’s just.. idk a thing pregnant women have. Like an aura of life’
Alien 'Oh you mean her pheromones. Got it.’
Human 'What? I can’t smell anything.’
Human Mike returns to ship after unsuccessful night at the bars
Mike: Hey guys I’m baaaaaack (slightly drunk singing)
Caro Lyssan: Hah, struck out huh?
Mike: What? Yeah this Caro chick was all over me one sec and then the Cupid Shuffle came on and when I started dancing to it she looked really grossed out and left. How could you tell?
Lyssan: You have rejection stink all over you man. Take a shower it’s making me sad
(The Cupid Shuffle is highly offensive in at least six cultures because shuffles are considered to be highly vulgar, similar to hip thrusting on earth)