Technically speaking, cyanide is not a poison. It is however, potentially, very hazardous. Cyanide is what is known as an asphyxiate.
The greatest hazard with cyanide is caused when cyanide comes in contact with any acid. The combination of the two causes the creation of hydrocyanic gas. This is the lethal gas used in the California gas chamber for killing condemned prisoners. To avoid even the possibility of such danger, do not allow both acid and cyanide to be in the same room at any time.
In addition, take the obvious precautions. Avoid swallowing cyanide or inhaling particles of cyanide. The asphyxiation danger of cyanide (but not hydrocyanic gas) may be eliminated by oxidizing the cyanide.
The very act of bombing oxidizes most of the cyanide in your solution. The extra oxygen element in hydrogen peroxide (H2O2) provides for the oxidation of the cyanide. Additional oxidation may be accomplished by the addition of household bleach or swimming pool chlorinator.