I have several plants of various species throughout the garden. Try planting a couple of plants near a front door. They are easy to grow and do not need special care, other than trimming out the old wood.
Lavender makes a great disinfectant.
I use lavender oil. Take a clean, 12-16 oz plastic spray bottle and fill it with distilled or spring water. Add about 4-6 drops of oil and shake. A little goes a very long way. I keep a bottle in the bathroom and also one in the kitchen .