So it's true that the COVID measures have cut off the supply of illegal drugs. No imports/exports. Soon the domestic supply will be all bought up by those with money, and the dealers will stop dealing.
At that point, the users who couldn't get more will start showing up at hospitals with withdrawal symptoms. They will likely get lots of calls about overdosing as people overdo the drugs, especially no knowing how much fentanyl they were cut with.
No doubt the media will play it as a second surge in coronavirus.