CBD vapour products that are derived from isolate or broad-spectrum CBD oils will be entirely free of THC. That means that they will not have any intoxicating or hallucinatory effects, despite delivering the highest percentages of CBD.
CBD products purchased in regions where recreational cannabis use is legal will often deliver an equal amount of THC and CBD. While such products do not have as intense an effect as a THC-focused oil, they will get you high.
You need to have a clear understanding of this distinction when reading product labels. CBD flower packaging is always explicit about concentrations of both THC and CBD. Terpene percentages are also showing up on labels with increasing frequency.
CBD oil cartridges will usually include a description of their oil source that can help you understand the product's potency: isolate, broad-spectrum, or full-spectrum.