This fear regarding CNG cylinders exploding is common, but its a rare occurance. A CNG kit fitted by brand and authorized dealers are approved and safe.
Natural Gas are odourless & colourless, hence you should'nt worry about your vehicle smelling bad. However, a chemical as added to CNGs for safety to find out if there's a leak.
This was true few years ago, but nowadays there's little difference in driving/riding experience when CNG is used as fuel.
While not relevent to the Freedom Bike, it is usually true. But carmakers like Tata has placed the cylinders in such a way that ensures optimal cargo space.
True, after-market CNG kits leads to certrain warranty T&C violations. Also, the insurance amount increases a bit compared to normal vehicles.