A Univ. of Nev. School of Medicine, Family Medicine answered. No, there are times where you can have small releases of bacteria into your bloodstream that last only a few minutes, for example, after you have your teeth cleaned.
To change the color of your hydrangeas, add the following to the soil: CHANGE TO PINK. For hydrangea blooms to be pink, the plants must not take up aluminum from the soil. If the soil naturally contains aluminum, one must try to keep it away from the hydrangea's system. Following are a few tricks that might work:
1 For the first year or two after planting and during any drought, be sure hydrangeas get plenty of water. Leaves will wilt if the soil is too dry.  If your soil is rich, you may not need to fertilize hydrangeas. If your soil is light or sandy, itâs best to feed the plants once a year n late winter or spring.