Not sure where to post. Pic of cut. Maybe graphic.

So my son fell yesterday. Has a nice little gash over his knee. Not sure if I should take him to get it cleaned... We have been staying home due to corona. Both him and my husband have asthma. I don't want to put him at an unnecessary risk if it can be taken care of at home. This was taken this morning. He did it last night. Thoughts please.