No. People would be poisoned. The Church has never taught that poison could be converted into Christ’s body, and in any case you are dealing with chemical activities proper to qualities, and not proper to substance as such. All such objections are based upon notions excluded by Catholic teaching. And it is of little use to refute what the Catholic Church does not teach.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty