Current drug detection methods, such as blood and urine analysis, are often invasive and raise ethical and privacy concerns. This study demonstrates that breathing through typical polypropylene-based meltblown cloth face masks is an efficient and user-friendly method for collecting drugs from exhaled breath for analysis. By using codeine, ephedrine, guaifenesin, and chlorpheniramine found in cough syrup as model compounds, we found that these face masks achieved a collection efficiency exceeding 92% for the tested drugs. The analysis yielded pharmacokinetic parameters─such as half-life (