Hi la.ihsoz, and thanks for your post. We understand the anxiety you are feeling for both the secondhand smoke in your apartment, as well as the current world-wide conditions with the COVID-19 virus.
We do have some material published here on our asthma.net website which may help you to manage your expressed concerns. For your convenience, here is a link to an article:
This one which focuses on reducing risk: https://asthma.net/news/prepare-coronavirus/.
We also have an article that is devoted to smoking and asthma. You may want to review this, too, at your leisure: https://asthma.net/triggers/smoking/
I do hope you find them to be helpful.
Wishing you well,
Leon (site moderator asthma.net)