Because Robin got the same amount of screen time as Batman
The smoke not only irritates the lungs but also causes excess production of mucus
For example, these products heat to various temperatures, can contain dry, moist, or liquid tobacco ingredients, and appear in a wide variety of shapes
Between that production, the fact that Grisham only just turned 29 earlier this month, and a thin outfield market in free agency, the stars seemed to align for him to pursue a weighty multi-year contract this winter

Cellulose acetate filters (CAF) CAF are made from cellulose that is acetylated (converted to cellulose acetate), and is dissolved, and spun as continuous synthetic fibers arranged in a bundle called tow, which is plasticized, shaped, and cut to a suitable length to act as a filter.2 These filters are a rod of 12,000 fibers and, fragments of this material, it is known, they separate from it in manufacturing and are released on inhalation of the cigarette.6,7 The efficiency of CAF to remove particles from cigarette smoke is substantially influenced by the length and circumference of the filter, the number and size of the filaments, and the presence of additives in the fibers.2 The selective lack of absorption of this CAF is known except for phenol, but instead they allow cyanide and hydrogen sulphide to pass.2 Again, Pauly et al.6,7 found that the CAF fibers and glass particles were released and therefore ingested or inhaled when cigarettes were smoked

The research paper presents a comprehensive comparison of the physical, chemical, and oxidative properties of mainstream (firsthand) smoke from commercially available herbal and tobacco cigarettes in the Indian market