1.45 These Regulations, except for subsection 3.5(3) of Part 3, Documentation, and section 4.21 of Part 4, Dangerous Goods Safety Marks, do not apply to a means of containment, or the contents of a means of containment, that is being fumigated with dangerous goods and that is in transport if the fumigant is the only dangerous goods in transport in the means of containment.