In the case of a declared "Public Health Emergency" .. I'd guess turning off the lights and locking up are about the only short term options, when the word "immediate" is used ..
"The ban, which takes effect immediately and runs through January 25, 2020, prohibits the sale of nicotine, flavored, non-flavored, and marijuana vaping products. "
The Declaration of an "Emergency" can give a Governor Many Powers he/she doesn't Normally have. And a "Health Emergency" is usually consider one of the Highest Emergencies.
But what Constitutes a actual "Health Emergency".
What Criteria did the Massachusetts Health Department use to Declare an Emergency?
And what Documentation does the Governor have to show this his/her actions will Significantly Improve the situation?
All Good Question that would fit Nicely in an Emergency Federal Injunction.