Are you refering to carbonated water?
Using carbonated water for germinating may help, but I am doubtful as most if not all of the CO2 would evaporate off before any benefit to the seed is achieved. Plants need CO2, but not so much at the germination phase.
Never use soda water as it has salts.
yes...poland spring has a line of co2/bubbling water...i use the plain non-flavor'd to mist my seedling's and they seem to love it...i'd swear they grow faster than the one's i dont.