My allergies have gotten worse year by year. While living in Austin for 18 years, I had a chronic sinus infection and nasal drip. Since moving to Fort Worth, I developed worse problems. I do live next to Trinity Park and thousands of trees. I still have the nasal drip (never sinus pressure), but have developed bronchitis that turns into breathing problems. My lungs are clear but my bronchial stays congested and rattles. I have a constant tickle in my throat. Some mornings I literally can t breathe until I use the nebulizer/albuterol machine. Hot coffee helps too. I take Zyrtec in the morning along with Musinex and a prescription med in the PM. It helps for a while but the allergies continue and worsen by the week. I really need relief. I use natural oil diffusers. Scents like orange, white tea/lemongrass or eucalyptus. I do not use Glade plug-ins, but do keep my apartment smelling nice with the oils. Are oils a solvent?