AromaTech™ Review – Premium Diffusers and Essential Oils for Home 4 Comments / Diffusers, Essential Oils, Reviews AromaTech Reviews. Nebulizing Scent Diffusers. Pure Essential & Aroma Oil. Scenting For Home & Business. AromaTech™ is a Canadian company that supplies nebulizing scent diffusers, 100% pure essential oils and aroma oils for home and business.