Personalized Autism Is Not Contagious But My Smile Is T-Shirt. Our design features a powerful message that challenges misconceptions about autism. It reminds people that autism is not contagious, but the infectious smile of someone with autism can brighten up anyone's day. By wearing this design, you can help promote understanding and acceptance of individuals with autism. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.