Please keep those unsubstantiated FUDDs to yourself. We do not enjoy/entertain your point of views, such as that infamous baking soda cures cancer scam from that now jailed Italian quack, etc.
Q.
Lastly: if you want to know more, study the standards set/imposed by FCC in regards to EMI/RF emission regulations, etc.
Since smart meters are about short bursts of transmission (to report back it's readings/operational status, etc.) throughout the day, while the rest of the time it's just pretty much laying dormant (no RF transmission happening back to the line), IMHO the worries is almost non-existent.
To all those critics/naysayers otherwise: show me that you DO NOT OWN/Use personal wireless devices such as cellphones, netbooks, iphones, no computers or TeeVee sets (switchmode power supply), no wireless internet routers, have a miller cage built intentionally to block RF; lead plates above your roof to shield cosmic gamma radiations, etc. then I'll believe you.