Ruling on selling perfumes that contain harmful substances
Question

                below this paragraph I will paste what one brother forwarded to me regarding the wholesale attar/perfume oil I buy from him in order to sell, my question is am I allowed to sell these perfumes I buy from him. I also buy perfume from different suppliers, do I need to ask these suppliers whats inside their perfumes as they have not mentioned anything. -Please note this question is part 3

Phthalates are one of the groups of "gender-bending" chemicals causing males of all species to become more female. These chemicals have disrupted the endocrine systems of wildlife, causing testicular cancer, genital deformations, low sperm counts and infertility in a number of species, including polar bears, deer, whales and otters, just to name a few.

Scientists believe phthalates are responsible for a similar pattern in humans as well.
Praise be to Allah.
      If it is not proven (and it is not thought most likely) that these 
      perfumes are harmful, then there is nothing wrong with buying and selling 
      them, or using them, because the basic principle is that this is 
      permissible, and there is no evidence or reason to make us shift from this 
      basic principle. 

    But if it is proven that these perfumes are harmful, then it is prohibited 
    to use them and perfume oneself with them. 

    Based on what is well-known from the texts and basic aims of Islam, anything 
    that causes harm to one’s religious commitment or physical well-being, 
    whether it is food, drink, oil, perfume or the like, it is prohibited for 
    the individual to use it or deal in it. Allah, may He be exalted, says 
    (interpretation of the meaning): “and 
    make not your own hands contribute to (your) destruction” 
    [al-Baqarah 2:195]. 
It 
    is not permissible for the Muslim to sell these harmful perfumes, because 
    that is causing harm to others, which is haraam, because the Prophet 
    (blessings and peace of Allah be upon him) said: “There should be neither 
    harm nor reciprocating harm.” Narrated by al-Haakim (2/57-58). He said: Its 
    isnaad is saheeh according to the conditions of Muslim. It was also classed 
    as saheeh by al-Albaani in Silsilat al-Ahaadeeth as-Saheehah 
    (1/498). 
If 
    the purchaser is happy to buy these perfumes because he wants to imitate 
    women, then it is not permissible to sell it to him in this case either, 
    because that is helping him to imitate women, which is a major sin. The 
    Messenger of Allah (blessings and peace of Allah be upon him) cursed men who 
    imitate women and women who imitate men. Narrated by al-Bukhaari (5435). 

    Secondly: 

    With regard to finding out from the supplier about the ingredients of these 
    perfumes, if there is certainty that these perfumes are harmful, then there 
    is no need to ask about that in that case, because what you must do is 
    refrain from using them, and asking about it will not change the facts of 
    the matter at all. But if there is some doubt about the harmful effects of 
    these perfumes and the matter has not reached the degree of certainty, then 
    you should ask to find out the facts in this case. The stronger the 
    suspicions and doubts, the more important it is to ask. 

    This applies if the supplier is going to the tell the truth. But if he is 
    going to lie in order to promote his own product, then asking this question 
    will not benefit the questioner at all. 

    And Allah knows best.