New Scent Trunk Coupon Code – 40% Off First Month! Last updated by Brandy on July 28, 2015. Subscription Box Coupons & Deals / Scent Trunk Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Scent Trunk is offering 40% off your first box of this monthly fragrance subscription for men or women! Use coupon code HELLO40 to save 40%. Visit Scent Trunk to subscribe or find out more. You can see all our Scent Trunk reviews too!