This mask thing is leading to some very unpleasant situations. The other day I was roundly abused by some holidaying Luxemburgers because I walked into a restaurant without a mask. It seems reasonable to me that I needn't put on a mask to walk 20 yards from the car park to a table, where I don't need one. I was told that I was 'fatally dangerous' to everyone around me. As it happens, before I retired, I worked for WHO all over the world and take their advice seriously. The majority of the masks being worn are singularly ineffective & I'm very much on the DD side of this argument.
Nevertheless, the day after the restaurant incident, the president of Catalonia announced that masks are obligatory at almost all times and in all locations, with a €100 for non-compliance, with very few exceptions. This is politicians for you. There's evidence that Covid-19 transmission is more likely in enclosed spaces, so we have to put on a mask to walk down the street! IMHO, this is Public Health theatre similar to the Security theatre put in place at airports: a political response to a problem that has the authorities grasping at any straw that will get them off the hook.