Is the skull symbol a symbol of drug control?

Skull sign is not a sign of drug control, but a sign of poisonous gas.

Hazardous chemicals and identification:

Category I: explosive substances and articles.

Category II: gas category 2. 1 combustible gas symbol (flame): black or white; Background color: red

2.2 Non-combustible and non-toxic gas (gas cylinder) symbol: black or white; Background color: green

2.3 poisonous gas symbols (skull and crossbow stick): black; Background color: white

Category III: Flammable liquids

Category IV: flammable solids category 4. 1 flammable solids category 4.2 flammable substances category 4.3 substances that emit flammable gases when in contact with water.

Category V: oxidants 5. 1 oxidants 5.2 organic peroxides.

Category 6. 1 toxic substance category 6.2 infectious substance

Category VII: radioactive materials category I-white category II-yellow category III-yellow category VII fissile materials.

Class VIII: Corrosive substances

Category IX: All kinds of dangerous substances and articles.