The big Star Spangled Banner celebration was broadcast live on TV this past weekend. As with most concerts, I watched the bands, audience and politicians on stage as they were enveloped in a constant vapor fog coming from the fog machines for about 3 to 4 hours. Similar in content to vaping liquids or ejuices, I thought those machines use glycerin and glycol fluid to produce the very same vapor people around the country are trying to outright ban?