Remember not too long ago there was a hue and cry over the use of incense at Mass because it would cause breathing problems and indoor air pollution.
That was quickly followed by the use of burning beeswax candles creating havoc with particles in the air and so forth.
~Now Holy Water.
It is simply more distraction from the true issues of the day; i.e., the wholesale abridgment of the rights of religious conscience, the declaration through juridical fiat that religious practice may only be in the private sphere and damned in the public one and so forth.
My very orthodox foot is going to meet some solipsistic butt in the future. I can see this coming.
A large amount of water is blessed every year on January 6 at Theophany (Ephiphany) - the Baptism of Our Lord. Individual bottles are distributed to the Faithful. Small amounts of that Holy Water can then be added to other water, making it Holy Water as well. We do drink that. Care needs to be taken that it is not drunk or used in a casual way. I have never heard of any health issues with drinking that water.