In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Firstly, there is no dispute regarding the fact that when governments demand that citizens must wear face masks in certain places, such as hospitals, supermarkets etc, then indeed one obeys the law, even if he disagrees with the science behind wearing a mask. And if a person thinks that he can challenge the government’s directives, then he should take the matter to the courts, but neither violate government directives nor join so-called peaceful protests.
Secondly, as for demanding that people must wear masks in places other than the ones specified in government directives, then indeed you should expect that some people will question your stance.
Al-Imām Al-Albāni (rahimahullāh) said:
“I know many doctors who do not shake hands with people fearing that there might be an infectious microbe in the hand of the person. For this reason, they do not shake hands with people–and this is a waswasah, a whispering… the whisper [is normally] restricted to some of the worshippers, but it has passed on to other than the worshippers, to the doctors and their likes…
So the meaning is that this is a whispering which destroys personal ties and human relations which are established between people. The foundation is that every person’s left-overs and interaction with them is that he is upon fiṭrah (original disposition) and upon health and wellbeing.
Thus, when it is established that so-and-so, for example, Allāh forbid, has the disease of tuberculosis and drinks from a vessel, then you can keep away from this, but you should have certain knowledge [beforehand] that he is afflicted with the disease of tuberculosis.
As for a whisper, “maybe he has it, maybe he has it”, then this is not permissible, because this is having an evil opinion about your Muslim brother and secondly, it comprises cutting off ties of brotherhood between you and your Muslim brother.
But when it is verifiably established that he is afflicted [with the disease], then you can take precautions and avoid drinking [from the same vessel] and shaking his hand. This is not from the whisperings and nor is it absence of reliance upon Allāh as is claimed by some people.”
Therefore, how can you force anyone to wear a mask after he quotes the above and then says to you,
“I disagree with the science behind wearing masks based on a different research I have read, but I will not violate government directives; rather all the precautions I will take – in situations where I am not forced by the government – will be based on the above clarification by Imaam Al-Albaanee [rahimahullaah]”.
Therefore, do not be overbearing, rather your duty is only to remind people to abide by government directives.
And Allaah knows best.