My only experience of wearing a face mask has been while sorting out a dusty loft. It was rather uncomfortable, presumably due to sensory issues and the fact that few people tolerate them well, it soon became moist and slightly smelly, and I wasn't all that convinced it was protecting me very well, because I figured that air was getting in from the sides - it wasn't an expensive mask.
As far as I can tell, there's no hard evidence that cheap masks for the public do any good - it seems any slight protection afforded by their limited air filtration is offset by the increased impulse to touch the face, the risks in handling and storing the mask, and the false sense of security the mask creates. They're perhaps of some use to inhibit an infected person from spreading the virus via coughs and sneezes, but I've been self-isolating for weeks (because my partner is in the vulnerable group) and even when I do go out, I observe the social distancing so meticulously that I'm highly unlikely to be a carrier.
So I have no plans to use a mask as a coronavirus measure unless they enforce it strongly. There's no sign of that in the US where I currently am. In the UK they say the gov will soon be telling the public to use them, but it's not clear whether that will be just advice or a diktat. I guess the unfortunate people who get forced back to work may well find that their employers are imposing such a rule on them. The matter barely affects me personally because as a pensioner I don't have to go out at all except for occasional food shopping (which is a kerbside pickup thing where I don't even have to get out of the car) and a walk round the loop for exercise in a sparsely-populated neck of the woods.
[RANT WARNING]
But I feel concerned and angry about the discomfort and risks that governments are choosing to impose on people for arbitrary and incorrect given reasons - Boris Johnson is trying to tell the UK to wear masks "to give people the confidence to return to work" (otherwise known as a false sense of security) and he's saying the UK is past the peak in new cases (to date that's not what the numbers are saying), and Trump has also made the same incorrect assertion about being past the peak, and his government has advised the public to wear masks, though he doesn't do so himself. I'm afraid the people of both countries are being used as guinea pigs in a very dangerous experiment, and in the US as cannon fodder in the Republican Party's attempts to hang onto power. I'm lucky enough to be able to watch the results from the safety and comfort of home, with almost complete autonomy of choice. I honestly thought I had very little compassion for the masses - even those close to me are retired and / or very healthy - but it seems even I have my limits, or maybe I'm just sick of stupid narcissists pretending they know best and somehow getting away with it.
So my advice to any ASDer wondering about whether to use a mask is, ignore politicians, read carefully what medical science says about masks, try one out if you have one, in a safe place, to get a feel for its comfort and how to use it properly, and make your own decision if the powers that be will allow you to. If you do use one, make sure first that you fully understand the problems associated with them and take appropriate steps to mitigate them. You might find that a home-made mask of a softer material is more comfortable, but design and use it very carefully. One well-meaning person was making masks for people, and sewed a layer of plastic between 2 layers of cotton, thus blocking off the filtering action completely by forcing all the air to go in and out of the edges. Obviously, if you think you may be already carrying the virus, wearing a mask would likely protect others.