Considering this is for HF, I tend to think risk is not as great. That's provided people don't touch it while transmitting. TOTAL magnetic flux can't be any larger than any other antenna.
No. The key points here is antenna size and wavelength.
Any resonant antenna accumulates some amount of RF energy in its reactive near field region.
The size of reactive near field region depends on antenna size and wavelength.
Antenna can be considered as impedance match circuit between feeding coax line and free space.
Free space has impedance 376 Ohm. Feeding coax line output has impedance about 50 Ohm.
In order to transform impedance, antenna needs to accumulate some amount of RF energy in the antenna system (antenna + antenna tuner).
For full size antenna this RF energy is distributed in a large volume of space.
For small size antenna this RF energy is distributed in a small volume of space.
For small size antenna the same amount of RF energy will be concentrated in a small volume of space.
It means that this small volume of space will have extremely high field strength.
When you look into small antenna, you're think that it is more safe than a large one. But it is not!
This is deceptive impression. This small antenna radiates the same amount of energy as a large one.
But the small antenna uses much more powerful field strengths (both E and H) in order to radiate the same amount of energy.
For example, let's check E and H field strength for different size antenna with the same 100W transmitter at 14 MHz.
Safe levels marked with black mark (E=130 V/m and H=60 A/m).
Electric field for full size half wave dipole:
Magnetic field for full size half wave dipole:
Electric field for magnetic loop (square with 1x1 m from copper tube 20 mm + capacitor, Q=2000):
Magnetic field for magnetic loop (square with 1x1 m from copper tube 20 mm + capacitor, Q=2000):
As you can see, it's more safe to be near full size antenna, than to be near small size antenna.
Just compare max E field strength 1700 V/m for full size antenna and 15000 V/m for small size antenna.
The same issue with max H field strength 3.8 A/m against 60 A/m.
As you can see, bigger antenna is safer than smaller