You may be right, but I'll bet there are literally hundreds of studies on second hand smoke if you knew where to look for them. It's always a possibility that J&J was trying to enhance business. It's also a possibility that they simply ran a flawed study. Take a look at the left. Studies or polls or group opinions on stuff are hard to get right. They screw their polls up every two years, which are supposedly run using the lastest methods.
Oh we know where to look alright!
And how about the American Cancer Society making a "mistake" on their 53,000 deaths from smoking and second hand smoke? Swept under the rug, right? You probably can't find it today, but WE have it!
And the ORNL Research Labs in Tennessee did extensive research on second hand smoke, and found it to be virtually harmless.
And the judge who did his own 5 year research on second hand smoke............he threw it out of court!