This study explores how individuals seek and use online information about indoor air quality (IAQ) in the context of health, with a focus on media and eHealth literacy. Given the rise of health misinformation and the critical impact of IAQ on well-being, understanding information-seeking behavior is essential. A thematic literature review was conducted using four databases (Web of Science, PubMed, Google Scholar, and Hrčak) and applying targeted search terms related to IAQ, health, and information behavior. Results revealed a limited number of studies explicitly addressing the intersection of IAQ, health literacy, and information practices, with none focused on the Croatian population. Findings highlight significant research gaps, particularly regarding public engagement with IAQ information and the influence of digital sources such as social media. The review underscores the need for improved eHealth literacy and tailored communication strategies to help individuals critically assess IAQ-related content and take informed action. This study calls for future research to bridge these gaps, especially in underrepresented regions like Croatia, and to develop interventions that enhance public understanding and health behavior in response to IAQ risks.