Now that 23 states and the District of Columbia have embraced the legalization of marijuana there are legitimate weed-related companies that are open for business. By 2020, big data shop New Frontier Financials estimates that the marijuana industry will reach $15.2 billion.

But, when it comes to smoking weed during a business meeting, don't expect the invitee to roll you a joint. Bring your own.

"Most people today don't pass a joint like they used to," media and public relations expert Cheryl Shuman said. "Most people have their own individual vaporizers. We all have it as a professional courtesy. If you have a cold or something and there's a joint being passed around, as a professional courtesy you want to decline and say, 'Hey not for me.'"

In order to showcase the breadth of products for customers and patients, Shuman explained that some companies hold dinner parties that pair specific strains of marijuana with appropriate high-end cuisine. This isn't your regular pot: She said the marijuana can be hand-selected for the specific client based on its genetic ability to target a specific ailment, like anxiety.

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To be fair, most experts said toking up during a business meeting—even if it is a cannabis-related event—is still frowned upon. Even at last week's 2015 Cannabis World Congress & Business Exposition in New York, a state where marijuana is still illegal, no one publicly imbibed during the conference.

Dan Humiston, president of the International Cannabis Association, admitted it's somewhat of a double standard, considering that alcohol is so freely accepted.

"I would lose credibility if at a lunch meeting I started vaporizing," he said. "You just don't do that. Now if I'm at dinner and I have some wine with dinner I don't lose credibility."

If you are going to smoke, Potnetwork.com CEO Richard Volpe said that it is up to the individual to control themselves. He pointed out that moods can be changed depending on what kind of marijuana is consumed.

"Everyone becomes their own monitor of what suits them for each particular meeting and event," he said.