There is no way to impose tariffs on Danish goods. We're part of the EU, and the inner market, so we'll just send the goods from some other EU country. So any tariff on Denmark would have to be a tariff on EU.
The US national anthem. People will stand around before sporting events knowing that they used to do something but are mystified they can't remember what.
The issue with that logic, voting with your money, which I once used as well, is that richer people get more of a vote than poor people. And as a bunch of the issues with global warming didn't really hit rich people, we shouldn't depend on them to fix it.
There is no way to impose tariffs on Danish goods. We're part of the EU, and the inner market, so we'll just send the goods from some other EU country. So any tariff on Denmark would have to be a tariff on EU.