Solid rocket motors (SRMs), frequently used as primary boosters in rockets, employ ammonium perchlorate as the oxidizer and aluminum powder as the fuel. Upon combustion, the exhaust products from composite propellants primarily include hydrochloric acid (HCl), carbon monoxide (CO), aluminum oxide, and hydrogen (H2). About 95% of the ammonium perchlorate undergoes conversion to HCl, constituting nearly 20% of the combustion product by weight, significantly contributing to air pollution. To address this environmental concern, we have developed a reusable MoS2 aerogel specifically engineered for absorbing HCl gas. The fabrication process is straightforward and cost‐effective, utilizing nontoxic reagents and standard equipment, enhancing its practicality. Characterization of the aerogel was conducted using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X‐ray Diffraction (XRD), X‐ray Photoelectron Spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) analysis. The aerogel demonstrated a high absorptive capacity, achieving 65.88% absorption efficiency for HCl gas, which is noteworthy. Moreover, the aerogel samples exhibited exceptional recyclability over five cycles, highlighting their suitability for applications requiring HCl gas absorption. This research lays the foundation for advancing and scaling up innovative nanomaterial‐based aerogels, offering versatile solutions for a wide range of contemporary applications.