Macau casinos go smoke-free - will it hurt revenues? By: CNBC.com News October 06, 2014 at 18:41 PM EDT A smoking ban in Asia's Las Vegas took effect over the weekend, sparking concerns that the policy could stub out the gaming outlook for Macau. Read More >> Related Stocks: Credit Suisse Group ADR MGM China Holdings Ltd Sands China Ltd ADR Wynn Macau