We can supply Viper Peroxiblast powder concrete and tile cleaner if requested. VOCs are less than .1% It has a slight pine fragrance.
Mixing / diluting the powder outside should allow the small amount of VOCs to off-gas. Probably would need to check with medical staff to be sure. The SDS is on-line - https://interlinksupply.com/index.php?item_num=CH48A
I don't know of any tile and grout product with 0.00 VOCs.