give off
phr. v..phr. v.. to produce something like a smell, heat, or light and send it out into the air.
phr. v.. to emit or discharge a substance or quality, such as an odour, radiation, or a specific atmosphere; typically used with inanimate subjects.
The old cheese gives off a very strong smell.
The heater gives off enough warmth to keep the entire small cabin cozy during the winter.
Certain species of fungi give off a faint bioluminescent glow that is only visible in complete darkness.
usually takes an object like 'smell', 'heat', 'light', or 'vibe'.
contrast with 'emit' for formal contexts; 'give off' is the standard choice for describing physical sensations or social 'vibes' in everyday speech.
The flower gives out a sweet smell.The flower gives off a sweet smell.'give out' usually means to stop working or to distribute things; 'give off' is the correct term for emitting smells or heat.