The word "make salubrious" refers to the act of improving something in a way that promotes health and well-being. Synonyms for this phrase include "enhance wellness," "boost vitality," "improve health," "promote fitness," "stimulate nutrition," "foster rejuvenation," "encourage rejuvenation," "bolster immunity," "cultivate soundness," and "amplify vitality." All of these synonyms convey the idea of making something better and more conducive to good health. Whether it's improving the air quality in a room, modifying a diet to include more wholesome foods, or taking steps to reduce stress, any action that contributes to a healthier and more salubrious environment can be described using these words.