Sen. Richard Blumenthal and scientists demonstrated the dangers of vaping Monday as state legislators edge closer to banning the devices amid public death and illness concerns.

Scientists at Yale University say the flavors being added to tobacco by manufacturers are not exactly what the users think they are.

Scientists say there are chemical reactions happening between flavor compounds and solvents and the user may be inhaling them while they are reacting. As chemicals mix and react with each other, they create other chemicals that scientists say can irritate respiratory tracks and create lung problems.

Scientists at Yale University have been conducting research for years.

Sen. Blumenthal says there is enough evidence for the FDA to get involved.

The FDA says 3.7 million young people vape with e-cigarettes and that number keeps climbing.

Blumenthal is pushing for a ban of flavored vaping, stopping the marketing of devices toward teens, and a potential ban on all vaping devices.

New York Gov. Andrew Cuomo announced he is already pursuing emergency regulations this week to quickly ban the sale of flavored e-cigarettes.