Using your sense of smell for any foreign smells is the cheapest and easiest way to gauge for toxicity, because if you smell something, it’s usually chemicals off-gassing. New car smell equals chemicals. As a healthy home inspector, I employ various measuring tools, including meters and pumps, to gather data on factors affecting air quality. Beyond on-site measurements like CO, CO2, PM 2.5 mic, and PM 10 mic, I also conduct comprehensive VOC analyses through air collection samples. Additionally, there are readily available monitors that homeowners can purchase to measure indoor air quality (IAQ). By obtaining readings, we can then investigate potential issues and address them effectively.