No, the alphas have their own pheromones. Cant copy that. Im sure he had omega pheromones too sincr he was with an alpha.
I can't remember but I would think an omega one to cause the brother to go into heat. The box is full of stuff the brother had left there. Heesoo being and beta doesn't notice the pheromones so he didn't notice the brother basically stamped "MINE" on all of his stuff. The ex-wife knew it was the brother though since he knew the pheromones. The ex-wife knew the moment he walked in the brother actually cares about Heesoo, much more then he cared about him.
As for it still being there you can see a toothbrush and such. He obviously has collected all the items of the brother's and plans to throw them away. Though because he still love the brother he probably is having trouble letting go.
As for what he actually threw away, no clue. Cause you see him debating over the box with the phenomenon. Might just be that we were supposed to think he tossed it so when we see the box still there we think he hasn't let go of the brother's stuff yet.
After reading this again, what kind of pheromones did Heesoo own, an Alpha one? What if he sprayed the damn room with that deodorant to trick that dick head, since he knows what kind of person they are?
Also he stated he didn't need it but went to throw something out, but you clearly see that the deodorant is still there, so what did Heesoo throw away? The plot is thicker than Dojuns D!!!!!