If you have flashbacks, and you are reading this, you know exactly what I mean. I hope you have people in your life who understand this, too. Not everyone does. While every therapist should have a clear idea of what a flashback is, and how you feel when you experience one, some therapists are unfamiliar with PTSD.
Dry ice can be bought in local grocery stores. However you can also produce your own dry ice through a portable dry ice maker. Certain portable dry ice makers are capable of p â¦ roducing 1-lb blocks of dry ice within a minute.owever you can also produce your own dry ice through a portable dry ice maker. Certain portable dry ice makers are capable of p â¦ roducing 1-lb blocks of dry ice within a minute.
1 Since it is constantly changing from solid to gas, it has a very short shelf-life. 2  Every 24 hours, 5-10 pounds of dry ice turns from a solid to a gas. 3  Though most people can buy dry ice, some stores will require you to be at least 18 years of age in order to purchase it. The thicker insulated your cooler or ice chest is, the slower the dry ice will sublimate. 2  Open and close the container as little as possible to slow down the sublimation process. 3  You can also fill the open space in the cooler with wadded paper to limit dead space and slow down sublimation as well.