Covid also spreads asymptomatically, and for a lot of people, days 1-14 of it can feel a lot like a common cold. You need to take preventable measures to not be a potential spreader. Those measures are... Getting vaccinated.

Unless you are living in a spacesuit, you shedding viral particles into common spaces does make you responsible for the health of other people.

If people are vulnerable, they are responsible for taking precautions. If I am sick, even with the "common cold," I quarantine.