| Welcome cocktails can wait. Airlines are now marketing fogging procedures instead. Cocktails. Bistro-style dining. Custom dinnerware. Chocolates. As Delta Air Lines launched a new, international, economy-class cabin service last fall, it unveiled a cheery advertisement listing all that passengers could expect. Six months later, it has released a new commercial, in which a top executive walks viewers through aircraft cleaning procedures, while a worker with a fogging machine sprays powerful disinfectant throughout the cabin. | 
