“液体口罩”突然火了！医生提醒

Group 1 - The core concept of the article revolves around the rising popularity of a product called "liquid mask," a nasal spray that claims to block viruses and bacteria, with some products reportedly selling over 1 million bottles annually during the peak season for respiratory infections [1][2]. - The product is marketed as creating a physical barrier in the nasal cavity to isolate pathogens and allergens, with claims of a 99.9% blockage rate [1][5]. Group 2 - Medical experts express skepticism regarding the effectiveness of the "liquid mask," highlighting that it has not undergone clinical validation and lacks supporting research data for its protective claims [6]. - The nasal cavity's complex structure makes it difficult for the "liquid mask" to provide comprehensive coverage, leaving areas unprotected and potentially vulnerable to infection [6]. - The durability of the protective film created by the "liquid mask" is questioned, as everyday actions like nose-picking or sneezing can compromise its effectiveness [6]. Group 3 - The article warns against exaggerated claims and advises consumers to be cautious about purchasing unverified alternatives to traditional masks, especially during the winter season when respiratory viruses are prevalent [9]. - It emphasizes that wearing proper masks, such as surgical masks or N95 respirators, remains one of the simplest and most effective methods for protection against respiratory infections [10].