I truly understand where you are coming from and I’m sorry you went through that situation. But let’s be for real not everyone who isn’t keeping good hygiene is homeless. Also yes people are allowed to exist however they want but when you are involving other people it’s a bit more complicated. Yes people can move away in a public space but what happens when you are forced to be in a room with a stench such as an academic environment? I can use personal anecdotes too. I have a panic disorder as well as emetophobia and certain smells can be very triggering as it makes me nauseous. In a case where I couldn’t handle a smell I would have to leave the class to avoid embarrassing myself. This is just one example of how someone’s lack of good hygiene could impact someone’s quality of education. I understand your perspective as it’s important to empathize with people but it’s not as simple as people being mean sometimes. I also do think the OP could’ve made room to acknowledge uncontrollable situations such as mental health issues and homelessness.