“无臭的”用英语怎么说

氮是一种无色无臭的气体.Nitrogen is a gas without colour or smell.纯空气是无色无臭的.Pure air is colourless and odourless.陶艺课采用的陶土是无毒无臭的天然矿物,柔软湿润,可塑性强.The materials used are natural clays any unpleasant smells....