With research that has clearly established higher heart disease risk for non-smokers who regularly breathe in other people's tobacco smoke, a new November 2011 study by US scientists has found that second-hand smoke also adversely affects those who suffer from heart failure by impairing their day-to-day quality of life.

http://uk.reuters.com/article/2011/11/29/us-secondhand-idUKTRE7AS23520111129?rpc=401&feedType=RSS&feedName=healthNews&rpc=401
http://www.foxnews.com/health/2011/11/30/secondhand-smoke-tied-to-bad-heart-failure-outcomes/