The vaping crisis is a real buzzkill.

Sales of marijuana vape products are down as much as 60% in some states — following a string of mysterious deaths among people who use e-cigarettes, according to a new report.

Vaping products are one of the quickest-growing segments of the legal marijuana industry, but have taken a big hit after the number of vaping-related deaths this week reached 12, according to Yahoo News.

Amid the fatalities and another 800 reported vaping-related illnesses, the legal pot industry’s revenue from vape products has dropped 15% nationwide, according to data from New Frontier, an economic analysis firm that tracks the industry.

“It’s having an impact on how consumers are behaving,” David Alport, the owner of Bridge City Collective in Portland, Oregon, told Yahoo News.

Alport said his business has seen a 31% drop in the sales of vape cartridges in the past two weeks.

“People are concerned, and we’re concerned,” he said.

Vaping products now represent one third of the U.S. legal cannabis industry — worth $9.6 billion in sales between 2017 and 2019, according to New Frontier Data.

Oregon has been the hardest hit — seeing a 62% drop in market share for vapes.

Last week, the Food and Drug Administration announced it was launching a criminal investigation into the string of vaping-related fatalities.

New York became the first state to ban the sale of flavored e-cigarettes and other vaping products except for menthol and tobacco flavors last Tuesday.