Cuz you know, all those poison are mostly affecting your internal organ while aphrodisiac only affect your d*ck. So yeah, all those all powerful cultivator have indestructible inner body but not their d*ck.
Yeah, it's hypocrisy. If the dose of aphrodisiac is, indeed, enough to kill if they dont have sex then you'd expect that they'd have to have sex until the effect runs out or is expended. At least OEM did that. Most novels have the super-powerful death-causing aphrodisiacs be done in one short round of sex.
Cum and go I guess? It is not like some author decided to have a specified writings about how the rape drug works. Either it is by the amount of times the dude ejaculates in intercourse or duration for the drug to wear off. Also, rape is rape, once the MC done the act, who cares if he is a sprinter or marathon runner?
In pokemon terms: giving them aphrodisiac is just like giving them PP Up and their poison resistance was because of the ability Immunity.
The real question is why don't they just "masturbate" instead of automatically jumping on any female near them. Spoiler had to Google how to spell it since I never had to type or write it
There are some who are resistant to poisons that could resist aphrodisiacs. But if they're at that stage, they never get afflicted by aphrodisiacs in the first place, as that usually happens way earlier in the novel if it does.
the real question is : will it affect eunuch? considering that they doesn't have that thingy, will they be immune to aphrodisiacs or it will it be deadly to them (some aphrodisiacs are deadly if not "cured")?
The Aphrodisiacs caused death because of some yada yada thingy when Yang and Yin mixed in a virgin body, where there is only pure Yang/Yin. It caused some blah blah imbalance in Yin/Yang that needed to be expelled or injected more to balance biggidy biggida so that the victim will not die. In conclusion, it is a virgin-killing poison.